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A Regression Model Relating Units Sold (Y), Price (X1), and Whether

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A regression model relating units sold (Y), price (X1), and whether or not promotion was used (X2 = 1 if promotion was used and 0 if it was not) resulted in the following model. A regression model relating units sold (Y), price (X<sub>1</sub>), and whether or not promotion was used (X<sub>2</sub> = 1 if promotion was used and 0 if it was not) resulted in the following model. and the following information is provided. a.Is price a significant variable? b.Is promotion significant? and the following information is provided. A regression model relating units sold (Y), price (X<sub>1</sub>), and whether or not promotion was used (X<sub>2</sub> = 1 if promotion was used and 0 if it was not) resulted in the following model. and the following information is provided. a.Is price a significant variable? b.Is promotion significant?
a.Is price a significant variable?
b.Is promotion significant?

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a.t = -3; p-value is between ....

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